ELECTROMAGNETIC BRAKES

SEMINAR REPORT ON

ELECTROMAGNETIC BRAKE

Deepak Kumar+91-8950783197

Electromagnetic Braking

What Is brake? Need for alternative What is electromagnetic brake Advantages Disadvantages Applications conclusion

CONTENTS

A brake is a mechanical device which retards motion.

Brakes use friction between two surfaces to convert the kinetic energy of the moving object into heat.

Types of Frictional brakes-Disc, Drum

Brake

All conventional systems of braking in road vehicles uses development of contact friction for retardation

These systems are prone to the wear and tear on usage

Conventional braking systems produces continuous power dissipation as heat and may fail if the temperature rises too high

Friction based braking methods are also not efficient under wet conditions

Need for Alternative

Disc is rotated in magnetic field eddy currents will be produced in disc eddy currents induced in disc will produce a

torque (motor principle) produced torque in disc opposes actual

rotation of disc (Lenz law)

Electromagnetic Braking

No friction Low maintenance requirement Less noise Simple in design High degree of safety

Advantages

Failure to act as a holding device Usage of electric power for braking

Less effective under very low velocities

Disadvantages

Already in use under some railway system Can be used for any road vehicles Equally applicable to heavy and light

vehicles Can be used as additional retarder for

aircrafts

Applications

Electromagnetic Braking is superior to conventional frictional braking as there is no friction and heat in electromagnetic braking.

So the conventional disc and drum brakes can be replaced with electromagnetic brakes.

Conclusion